First Lady-to-be Michelle Obama and daughters Sasha and Malia arrived in D.C. last night, a day earlier than expected, in order to have some additional time to settle in to the Hay-Adams Hotel before the girls start school on Monday. Reporters and onlookers have been camped outside the hotel since Saturday, but the Obama women managed to enter the hotel through the alley last night without anyone capturing images of them. The Post reports that President-elect Barack Obama is expected to arrive this afternoon.